Every week, ARR Club's analytics engine processes new revenue milestones to find the fastest-growing SaaS and AI companies in our database. Here is this week's Growth Velocity Leaderboard based on verified ARR milestones published over the past 7 days:
| Rank | Company | Growth Rate (CAGR) | ARR Trajectory |
|---|---|---|---|
| #1 | Viktor |
+161x
annualized over 1.6 months
|
$25M → $50M |
| #2 | Listen Labs |
+518%
annualized over 7.2 months
|
$10M → $30M |
| #3 | Langdock |
+293%
annualized over 2.8 months
|
$40M → $55M |
| #4 | Zaymo |
+222%
annualized over 4.8 months
|
$2.5M → $4M |
| #5 | InboxKit |
+114%
annualized over 9.3 months
|
$10M → $18M |
Note: CAGR (Compound Annual Growth Rate) is computed based on the linear time elapsed between the two most recent revenue milestones. Only companies with verified ARR updates in the past 7 days are considered for this recap.
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Viktor Historical Milestones
Sep 18, 2026
Viktor ARR hit $50M in just 7 months$50M
Jul 30, 2026
Viktor ARR surpasses $25M within 16 weeks through self-serve motion$25M
๐ฅ 50,000 Teams
Jun 19, 2026
Viktor ARR hit $20M driven by Slack adoption and Microsoft Teams expansion$20M
๐ฅ 320 million Users
May 19, 2026
Viktor raises $75M Series A, the largest ever for a Polish-founded company$15M
May 9, 2026
GetViktor crosses $15M ARR in ~10 weeks$15M
AI INSIGHTS
Revenue Growth Projection
Projected ARR in 1 Year
$233M
Est. Time to $100M
~100 days
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